MGLS
Shotaro Makisumi started developing the idea in 2004.
From 2006-2007 Lucas Garron completed development and the step was named MGLS after Makisumi and Garron.
The first image comes from Lucas Garron's site. The others are screenshots of the now closed SpeedSolvingRubiksCube Yahoo group.
Additional MGLS Sources
Thanks to Lucas Garron for providing links to the sources on this page.